Department of Prosthodontics, LMU-University Munich, Munich, Germany.
Clin Oral Investig. 2012 Apr;16(2):665-71. doi: 10.1007/s00784-011-0540-0. Epub 2011 Mar 30.
High bond strengths are required in order to avoid bracket failure during treatment while brackets should be removable. In addition, chair time should be kept at a minimum. Therefore, the aim of this study was to investigate any differences in bracket's bond strength to enamel by reducing the polymerization time and the steps of bonding procedure. Five hundred teeth were randomly allocated into 20 groups. The groups were established considering the investigated curing units (quartz-tungsten-halogen (QTH) and light-emitting diode (LED), each with two different polymerization times) and the used bonding agents (Clearfil SE Bond, Transbond Plus, Ideal1, iBond, and Transbond XT Primer following acid etching). The brackets were debonded using a shear-peel load and used to calculate the bond strength. The location of adhesive failure was registered by using the modified adhesive remnant index (ARI). The influence of the parameters curing unit, curing time, and bonding agent as well as their interaction products on bond strength showed that the bonding agent influenced the bond strength most followed by curing time. The parameter curing unit as well as all the generated interaction products of it showed a lower impact. Regarding the ARI, the bonding agent exhibited also the highest influence. Using a LED resulted in comparable bond strengths as the QTH curing device also at shorter exposure times. Additionally, the two-component self-etching primers showed similar bond strengths compared to the acid-etching method. Chair time can be reduced by using two-component self-etching primers and LED without decrease of bond strength.
为了避免治疗过程中托槽脱落，需要具有较高的粘结强度，同时托槽应易于去除。此外，椅旁操作时间应尽量缩短。因此，本研究旨在通过减少光固化时间和粘结操作步骤，研究粘结剂对釉质粘结强度的影响。将 500 颗牙齿随机分为 20 组，考虑到使用的光固化灯（石英钨卤素灯和发光二极管）和粘结剂（Clearfil SE Bond、Transbond Plus、Ideal1、iBond、Transbond XT Primer 酸蚀后）的不同，建立了不同的分组。采用剪切-剥离载荷去除托槽，计算粘结强度。采用改良型粘结残留指数（ARI）记录粘结剂的脱落位置。结果表明，粘结剂、光固化时间对粘结强度的影响最大，其次是光固化灯。光固化灯以及所有交互作用产品对粘结强度的影响较小。在 ARI 方面，粘结剂的影响最大。与 QTH 光固化灯相比，LED 光固化灯在较短的曝光时间下也能达到相近的粘结强度。此外，与酸蚀处理相比，两种双组分自酸蚀粘结剂的粘结强度相似。使用双组分自酸蚀粘结剂和 LED 可以减少椅旁操作时间，而不会降低粘结强度。
